You’re welcome! This forum has helped me so much with my projects over the years, that it only feels right to contribute knowledge whenever I can. Your manufacture date can be determined through the two letters at the end of your serial number. The first letter indicates the year, and the second indicates the month. Electrical-Forensics.com has free to use charts that contain the deciding information. I’m not exactly sure how to tell whether or not the machine has a high torque transmission. Some machines will have a sticker inside, but mine came from the factory with a high torque, and had no sticker.
Hope this helps,
Thatwasherguy.